/* ==========================================================================
   BoostNet Deep Space Console - Core Design System & Stylesheet
   Palette: Deep Ink, Muted Violet, Cool White, Restrained Cyan
   Typography: Chinese System Sans-Serif with Technical Monospace Annotations
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-space: #07090E;
  --bg-deep: #0B0F19;
  --bg-surface: #101626;
  --bg-surface-card: #151D30;
  --bg-surface-elevated: #1B253D;

  --accent-cyan: #22D3EE;
  --accent-cyan-hover: #38BDF8;
  --accent-cyan-dim: #0891B2;
  --accent-cyan-subtle: rgba(34, 211, 238, 0.08);
  --accent-cyan-glow: rgba(34, 211, 238, 0.28);

  --accent-violet: #7C5CFC;
  --accent-violet-muted: #9D85FF;
  --accent-violet-subtle: rgba(124, 92, 252, 0.12);
  --accent-violet-glow: rgba(124, 92, 252, 0.32);

  --text-primary: #F0F4FA;
  --text-secondary: #9AA7BD;
  --text-muted: #64748B;
  --text-highlight: #FFFFFF;

  --border-dim: #1E283D;
  --border-mid: #2A3854;
  --border-cyan: rgba(34, 211, 238, 0.35);
  --border-violet: rgba(124, 92, 252, 0.35);

  --badge-warning: #F59E0B;
  --badge-success: #10B981;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Consolas, "Liberation Mono", monospace;

  /* Layout & Spacing */
  --max-width: 1240px;
  --nav-height: 72px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-full: 9999px;
  --shadow-hud: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-cyan-glow: 0 0 25px rgba(34, 211, 238, 0.2);
  --shadow-violet-glow: 0 0 25px rgba(124, 92, 252, 0.2);

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 20px);
  background-color: var(--bg-space);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.65;
  background-color: var(--bg-space);
  background-image: 
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(124, 92, 252, 0.12) 0%, transparent 70%),
    radial-gradient(ellipse 60% 40% at 85% 60%, rgba(34, 211, 238, 0.05) 0%, transparent 60%);
  background-attachment: fixed;
  overflow-x: hidden;
  position: relative;
}

/* Accessible Focus States */
:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Reduced Motion Mode */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Lightweight CSS Background Stars */
.space-stars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: 
    radial-gradient(1px 1px at 20px 30px, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1.5px 1.5px at 150px 80px, rgba(34, 211, 238, 0.8), transparent),
    radial-gradient(1px 1px at 280px 180px, rgba(255, 255, 255, 0.6), transparent),
    radial-gradient(2px 2px at 400px 320px, rgba(157, 133, 255, 0.8), transparent),
    radial-gradient(1px 1px at 580px 120px, rgba(255, 255, 255, 0.6), transparent),
    radial-gradient(1.5px 1.5px at 750px 240px, rgba(34, 211, 238, 0.7), transparent),
    radial-gradient(1px 1px at 920px 90px, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(2px 2px at 1100px 390px, rgba(124, 92, 252, 0.7), transparent),
    radial-gradient(1px 1px at 1250px 210px, rgba(255, 255, 255, 0.7), transparent);
  background-size: 650px 650px;
  opacity: 0.55;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
  position: relative;
  z-index: 1;
}

/* Monospace & HUD Labels */
.mono-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hud-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-mid);
  color: var(--accent-cyan);
}

.hud-badge .badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
  display: inline-block;
}

.hud-badge.violet {
  color: var(--accent-violet-muted);
  border-color: var(--border-violet);
}
.hud-badge.violet .badge-dot {
  background-color: var(--accent-violet-muted);
  box-shadow: 0 0 8px var(--accent-violet);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background-color: rgba(7, 9, 14, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-dim);
  transition: border-color var(--transition-fast);
}

.site-header .nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-brand-logo {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-brand-logo svg {
  width: 100%;
  height: 100%;
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--text-highlight);
  line-height: 1.2;
}

.brand-title span {
  color: var(--accent-cyan);
}

.brand-telemetry {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--accent-violet-muted);
  letter-spacing: 0.06em;
}

/* Desktop Navigation Links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  padding: 6px 0;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-cyan);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent-cyan);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

/* Commercial Primary Nav Button */
.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  color: #080A10;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, #38BDF8 100%);
  border-radius: var(--radius-sm);
  box-shadow: 0 0 16px var(--accent-cyan-glow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(34, 211, 238, 0.45);
}

/* Mobile Hamburger Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-mid);
  color: var(--text-primary);
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.mobile-toggle svg {
  display: block;
  width: 22px;
  height: 22px;
}

/* Mobile Navigation Panel */
.mobile-nav-panel {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background-color: rgba(11, 15, 25, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-dim);
  padding: 24px 20px 32px;
  z-index: 99;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
}

.mobile-nav-panel.open {
  display: flex;
}

.mobile-nav-link {
  text-decoration: none;
  font-size: 1.05rem;
  color: var(--text-primary);
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.mobile-nav-link:hover {
  color: var(--accent-cyan);
}

.mobile-nav-cta {
  margin-top: 12px;
  text-align: center;
  padding: 12px;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-violet) 100%);
  color: #FFFFFF;
  text-decoration: none;
  font-weight: 700;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   Section Base & Header Component
   ========================================================================== */

section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px;
}

.section-header .sub-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-cyan);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--text-highlight);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.7;
}

/* ==========================================================================
   Hero Section: Central Orbital Diagram Layout
   Avoid standard left-copy/right-dashboard!
   Top: Brand statement + H1
   Center: Central orbital diagram + interactive checkpoints
   Bottom: Action CTAs + Telemetry badges
   ========================================================================== */

.hero-space {
  padding-top: 48px;
  padding-bottom: 96px;
  text-align: center;
  position: relative;
}

.hero-top-statement {
  max-width: 900px;
  margin: 0 auto 36px;
}

.hero-callsign-box {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  background: rgba(16, 22, 38, 0.7);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-mid);
}

.hero-callsign {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-violet-muted);
  letter-spacing: 0.1em;
}

.hero-top-statement h1 {
  font-size: clamp(2.1rem, 4.5vw, 3.4rem);
  font-weight: 900;
  color: var(--text-highlight);
  line-height: 1.25;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.hero-top-statement h1 .brand-glow {
  background: linear-gradient(135deg, #FFFFFF 20%, var(--accent-cyan) 60%, var(--accent-violet-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: clamp(1rem, 1.8vw, 1.18rem);
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 780px;
  margin: 0 auto;
}

/* Central Orbital Diagram Wrapper */
.orbital-stage-wrapper {
  max-width: 820px;
  margin: 0 auto 40px;
  position: relative;
  background: radial-gradient(circle at 50% 50%, rgba(124, 92, 252, 0.12) 0%, rgba(34, 211, 238, 0.04) 45%, transparent 70%);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 32px 24px 24px;
  box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.6), var(--shadow-hud);
}

.orbital-hud-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-dim);
  padding-bottom: 14px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.hud-channel {
  color: var(--accent-cyan);
}

/* Central SVG Orbital Display */
.orbital-canvas-container {
  position: relative;
  width: 100%;
  max-width: 680px;
  height: 380px;
  margin: 0 auto;
}

.orbital-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* Orbital Checkpoint Buttons (embedded in orbit canvas) */
.checkpoint-node {
  cursor: pointer;
  transition: all var(--transition-fast);
}

.checkpoint-node:hover circle.node-ring {
  stroke: var(--accent-cyan);
  stroke-width: 3;
}

.checkpoint-node.active circle.node-core {
  fill: var(--accent-cyan);
  filter: drop-shadow(0 0 10px var(--accent-cyan));
}

.checkpoint-node.active circle.node-ring {
  stroke: #FFFFFF;
}

/* Orbital Demonstration Mission Control Box */
.mission-control-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-top: 20px;
  text-align: left;
}

.mission-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.mission-status-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--text-primary);
  font-weight: 600;
}

.mission-progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: var(--bg-deep);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 16px;
}

.mission-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-violet) 0%, var(--accent-cyan) 100%);
  transition: width 0.4s ease;
}

.mission-checkpoints-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.checkpoint-card-btn {
  background: var(--bg-surface-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: left;
  cursor: pointer;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.checkpoint-card-btn:hover {
  border-color: var(--border-cyan);
  transform: translateY(-2px);
}

.checkpoint-card-btn.selected {
  border-color: var(--accent-cyan);
  background: rgba(34, 211, 238, 0.08);
  box-shadow: 0 0 16px rgba(34, 211, 238, 0.15);
}

.checkpoint-card-btn .chk-key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
  font-weight: 700;
}

.checkpoint-card-btn .chk-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.checkpoint-card-btn .chk-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.mission-log-live-text {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: var(--bg-deep);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-dim);
  color: var(--accent-cyan);
  min-height: 42px;
  display: flex;
  align-items: center;
}

.mission-actions-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.btn-reset-orbit {
  background: transparent;
  border: 1px solid var(--border-mid);
  color: var(--text-secondary);
  padding: 4px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-reset-orbit:hover {
  color: var(--text-primary);
  border-color: var(--text-secondary);
}

.fictional-disclaimer {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 10px;
  font-style: italic;
}

/* Hero Bottom Registration / Package CTAs */
.hero-bottom-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 15px 32px;
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
  color: #080A10;
  background: linear-gradient(135deg, var(--accent-cyan) 0%, #38BDF8 60%, #9D85FF 100%);
  border-radius: var(--radius-sm);
  box-shadow: 0 0 28px var(--accent-cyan-glow);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 38px rgba(34, 211, 238, 0.45);
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 1.02rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-mid);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.btn-hero-secondary:hover {
  background: var(--bg-surface-elevated);
  border-color: var(--accent-violet-muted);
  color: #FFFFFF;
}

/* Fictional Telemetry Readout Grid */
.hero-telemetry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
}

.telemetry-item {
  background: rgba(16, 22, 38, 0.6);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 14px 12px;
  text-align: center;
}

.telemetry-item .telem-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.telemetry-item .telem-value {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.telemetry-item .telem-desc {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   Vertical Mission Log (服务优势)
   ========================================================================== */

.mission-log-section {
  background: linear-gradient(180deg, var(--bg-space) 0%, var(--bg-deep) 50%, var(--bg-space) 100%);
}

.mission-log-timeline {
  position: relative;
  max-width: 860px;
  margin: 0 auto;
  padding: 20px 0;
}

.mission-log-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 36px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-cyan) 0%, var(--accent-violet) 50%, var(--border-mid) 100%);
  z-index: 1;
}

.mission-log-entry {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 28px;
  margin-bottom: 40px;
  z-index: 2;
}

.mission-log-entry:last-child {
  margin-bottom: 0;
}

.log-node-marker {
  width: 72px;
  height: 72px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--bg-surface-card);
  border: 2px solid var(--accent-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--accent-cyan-glow);
}

.mission-log-entry:nth-child(even) .log-node-marker {
  border-color: var(--accent-violet-muted);
  box-shadow: 0 0 20px var(--accent-violet-glow);
}

.log-node-marker svg {
  width: 32px;
  height: 32px;
  color: var(--accent-cyan);
}

.mission-log-entry:nth-child(even) .log-node-marker svg {
  color: var(--accent-violet-muted);
}

.log-entry-content {
  flex: 1;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  box-shadow: var(--shadow-hud);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.log-entry-content:hover {
  transform: translateX(4px);
  border-color: var(--border-mid);
}

.log-meta-tag {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.log-entry-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-highlight);
  margin-bottom: 10px;
}

.log-entry-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 14px;
}

.log-technical-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.spec-badge {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  background: var(--bg-surface-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

/* ==========================================================================
   SVG Orbital Map & Network Destinations (节点网络)
   ========================================================================== */

.network-map-section {
  position: relative;
}

.orbital-map-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 36px;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-hud);
}

.map-svg-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 520px;
  margin: 0 auto;
}

.map-svg-viewport svg {
  width: 100%;
  height: 100%;
}

.nodes-destinations-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.node-destination-card {
  background: var(--bg-surface-card);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.node-destination-card:hover,
.node-destination-card.active {
  border-color: var(--accent-cyan);
  background: var(--bg-surface-elevated);
}

.node-card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 6px;
}

.node-location-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-highlight);
}

.node-ping-indicator {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  background: rgba(34, 211, 238, 0.08);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.node-card-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.node-tag-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.node-tag-pill {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 2px 6px;
  background: var(--bg-deep);
  border: 1px solid var(--border-dim);
  color: var(--accent-violet-muted);
  border-radius: 3px;
}

/* ==========================================================================
   AI & Streaming Scenarios (流媒体与AI)
   ========================================================================== */

.scenarios-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.scenario-console-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 32px;
  box-shadow: var(--shadow-hud);
}

.console-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-dim);
}

.console-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
}

.console-icon-wrap.violet {
  background: rgba(124, 92, 252, 0.1);
  border-color: var(--border-violet);
}

.console-icon-wrap svg {
  width: 24px;
  height: 24px;
}

.console-title-wrap h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-highlight);
}

.console-title-wrap span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
}

.console-title-wrap.violet span {
  color: var(--accent-violet-muted);
}

.scenario-platform-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.platform-pill {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-surface-card);
  border: 1px solid var(--border-mid);
  color: var(--text-primary);
}

.scenario-details-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.scenario-detail-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.scenario-detail-row strong {
  color: var(--text-primary);
  min-width: 90px;
  flex-shrink: 0;
}

.accuracy-disclaimer-box {
  margin-top: 24px;
  background: rgba(245, 158, 11, 0.08);
  border-left: 3px solid var(--badge-warning);
  padding: 10px 14px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.78rem;
  color: #FBBF24;
  line-height: 1.5;
}

/* ==========================================================================
   Launch Manifests (套餐价格)
   ========================================================================== */

.manifests-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.manifest-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 30px 22px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.manifest-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-cyan);
}

.manifest-card.highlighted {
  border-color: var(--accent-cyan);
  background: linear-gradient(180deg, rgba(34, 211, 238, 0.06) 0%, var(--bg-surface) 40%);
  box-shadow: 0 0 32px rgba(34, 211, 238, 0.15);
}

.manifest-flag {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, var(--accent-cyan) 0%, var(--accent-violet) 100%);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.manifest-header {
  border-bottom: 1px solid var(--border-dim);
  padding-bottom: 20px;
  margin-bottom: 20px;
}

.manifest-flight-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-cyan);
  margin-bottom: 6px;
  display: block;
}

.manifest-card.highlighted .manifest-flight-code {
  color: var(--accent-cyan);
}

.manifest-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-highlight);
  margin-bottom: 14px;
}

.manifest-pricing-row {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.manifest-currency {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-cyan);
}

.manifest-price-num {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--text-highlight);
  line-height: 1;
}

.manifest-period {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.manifest-billing-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.manifest-specs-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  flex: 1;
}

.manifest-specs-list li {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
  padding-bottom: 6px;
}

.manifest-specs-list .spec-label {
  color: var(--text-muted);
}

.manifest-specs-list .spec-value {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-primary);
  text-align: right;
}

.btn-manifest-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  text-align: center;
  font-size: 0.92rem;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-mid);
  color: var(--text-primary);
}

.manifest-card.highlighted .btn-manifest-cta {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, #38BDF8 100%);
  color: #080A10;
  border: none;
  box-shadow: 0 0 20px var(--accent-cyan-glow);
}

.btn-manifest-cta:hover {
  background: var(--accent-cyan);
  color: #080A10;
  border-color: var(--accent-cyan);
}

.manifest-notes-bar {
  text-align: center;
  margin-top: 32px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Tutorials & Workflow (使用教程)
   ========================================================================== */

.tutorials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tutorial-step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
}

.step-num-badge {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 900;
  color: rgba(34, 211, 238, 0.3);
  margin-bottom: 12px;
}

.tutorial-step-card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-highlight);
  margin-bottom: 8px;
}

.tutorial-step-card p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Testimonial Cards (航天员通讯简报)
   ========================================================================== */

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-hud-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testi-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.testi-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent-cyan);
}

.testi-info h4 {
  font-size: 0.95rem;
  color: var(--text-highlight);
}

.testi-info span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.testi-quote {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
}

.testi-telemetry-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-violet-muted);
}

/* ==========================================================================
   SEO Articles Grid (9 Illustrated Cards in 3x3)
   ========================================================================== */

.articles-grid-3x3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card-hud {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-fast);
  text-decoration: none;
  color: inherit;
}

.article-card-hud:hover {
  transform: translateY(-3px);
  border-color: var(--border-cyan);
  box-shadow: var(--shadow-hud);
}

.article-badge-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.article-category-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
  background: var(--accent-cyan-subtle);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.article-read-time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.article-card-hud h3 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-highlight);
  line-height: 1.45;
  margin-bottom: 10px;
}

.article-card-hud p {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.article-footer-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 12px;
}

.article-read-link {
  color: var(--accent-cyan);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   Accordion FAQ Section
   ========================================================================== */

.faq-container {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: var(--border-mid);
}

.faq-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-highlight);
}

.faq-icon-arrow {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform 0.3s ease;
  color: var(--accent-cyan);
}

.faq-item.open .faq-icon-arrow {
  transform: rotate(180deg);
}

.faq-answer-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out;
  background: rgba(11, 15, 25, 0.4);
}

.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background-color: #05060A;
  border-top: 1px solid var(--border-dim);
  padding: 60px 0 36px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 36px;
  margin-bottom: 48px;
}

.footer-brand-col p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.65;
  margin-top: 12px;
  max-width: 320px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-primary);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-list a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links-list a:hover {
  color: var(--accent-cyan);
}

.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8rem;
}

.footer-legal-links {
  display: flex;
  gap: 20px;
}

.footer-legal-links a {
  color: var(--text-muted);
  text-decoration: none;
}

.footer-legal-links a:hover {
  color: var(--accent-cyan);
}

/* ==========================================================================
   Sub-Pages & Article Common Layout
   ========================================================================== */

.subpage-container {
  max-width: 860px;
  margin: 40px auto 80px;
  padding: 0 20px;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb-nav a {
  color: var(--text-secondary);
  text-decoration: none;
}

.breadcrumb-nav a:hover {
  color: var(--accent-cyan);
}

.article-header {
  margin-bottom: 36px;
  border-bottom: 1px solid var(--border-dim);
  padding-bottom: 24px;
}

.article-header h1 {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 800;
  color: var(--text-highlight);
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.article-content {
  color: #D1D5DB;
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-content h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-highlight);
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-dim);
}

.article-content h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin: 28px 0 12px;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content ul, .article-content ol {
  margin: 16px 0 24px 28px;
}

.article-content li {
  margin-bottom: 8px;
}

.article-content blockquote {
  background: rgba(124, 92, 252, 0.08);
  border-left: 3px solid var(--accent-violet);
  padding: 14px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-primary);
  font-style: italic;
}

.article-content code {
  font-family: var(--font-mono);
  background: var(--bg-surface-elevated);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.9em;
  color: var(--accent-cyan);
}

.article-content pre {
  background: var(--bg-deep);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  margin: 20px 0;
}

.article-callout-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 36px 0;
  text-align: center;
}

.article-callout-box h3 {
  color: var(--text-highlight);
  margin-bottom: 10px;
}

.article-callout-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 18px;
}

.related-articles-section {
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--border-dim);
}

.related-articles-section h3 {
  font-size: 1.25rem;
  color: var(--text-highlight);
  margin-bottom: 20px;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.related-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-sm);
  padding: 16px;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
}

.related-card:hover {
  border-color: var(--border-cyan);
  transform: translateY(-2px);
}

.related-card h4 {
  font-size: 0.98rem;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.related-card span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-cyan);
}

/* ==========================================================================
   Responsive Breakpoints
   Tested against 375px, 390px, 430px, 768px, 1024px, 1440px
   ========================================================================== */

@media (max-width: 1024px) {
  .nav-menu {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .manifests-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .orbital-map-container {
    grid-template-columns: 1fr;
  }
  .articles-grid-3x3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero-telemetry-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tutorials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  section {
    padding: 60px 0;
  }
  .hero-space {
    padding-top: 28px;
    padding-bottom: 60px;
  }
  .orbital-canvas-container {
    height: 300px;
  }
  .mission-checkpoints-row {
    grid-template-columns: 1fr;
  }
  .scenarios-grid {
    grid-template-columns: 1fr;
  }
  .manifests-grid {
    grid-template-columns: 1fr;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid-3x3 {
    grid-template-columns: 1fr;
  }
  .related-articles-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
  }
  .footer-legal-links {
    flex-wrap: wrap;
    justify-content: center;
  }
  .mission-log-timeline::before {
    left: 24px;
  }
  .mission-log-entry {
    gap: 16px;
  }
  .log-node-marker {
    width: 48px;
    height: 48px;
  }
  .log-node-marker svg {
    width: 22px;
    height: 22px;
  }
  .log-entry-content {
    padding: 18px 20px;
  }
}

@media (max-width: 430px) {
  .hero-telemetry-grid {
    grid-template-columns: 1fr;
  }
  .tutorials-grid {
    grid-template-columns: 1fr;
  }
  .orbital-stage-wrapper {
    padding: 20px 14px 16px;
  }
  .hero-bottom-actions {
    flex-direction: column;
    width: 100%;
  }
  .btn-hero-primary,
  .btn-hero-secondary {
    width: 100%;
  }
}